Home / 5,115.60-7,056.24-3,125.04

Finding the Fourth Proportional to 5,115.60, 7,056.24 and 3,125.04

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Solution

The fourth proportional to 5,115.60, 7,056.24 and 3,125.04 is: 4,310.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,115.60 : 7,056.24 = 3,125.04 : x
  2. Step 2: Convert to fraction form
    5,115.60/7,056.24 = 3,125.04/x
  3. Step 3: Cross multiply
    5,115.60x = 7,056.24 × 3,125.04
  4. Step 4: Simplify right side
    5,115.60x = 22,051,032.25
  5. Step 5: Solve for x
    x = 22,051,032.25/5,115.60
  6. Step 6: Final answer
    x = 4,310.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.